Best AI Translator: Which Tool to Use for Which Text

If you only need the gist of a sentence, almost any translator works. The trouble starts when the text will be published: a product page, an email to a client, an article or subtitles. That is where the differences between tools show up, and they are larger for languages like Arabic or Persian than for English and German.

Short answer: for quick, free, everyday translation use Google Translate; for formal text and documents in European languages use DeepL; for long, tone-sensitive or technical text, especially in non-Latin languages, use an assistant like Claude or ChatGPT with a good prompt; for video use Rask AI. None of them is best at everything.

Two kinds of tools: dedicated translators and general assistants#

Today's translation tools fall into two groups, and knowing the difference is half the decision.

• Dedicated translators (DeepL, Google Translate, Lara Translate, iTranslate) are built only for translation. They are fast, consistent, don't skip sentences, and usually translate files or images too. But you can't easily tell them "this is for teenagers" or "don't translate the product name"; where you can, the options are limited.
• General assistants (ChatGPT, Claude, Gemini) are large language models for which translation is one task among many. They understand context, tone, glossaries and instructions, and can translate and localize at the same time. On the other hand, they sometimes rewrite freely or condense part of a long text.

Comparison table#

Language-support ratings are general impressions from each tool's page in the di9 tools directory. All of these tools support Arabic; quality for widely used languages is generally higher than for low-resource ones.

Which tool is for whom#

DeepL#

For people who work with European languages and want Word, PowerPoint or PDF files translated with the layout intact. It offers a custom glossary and a formal/informal tone switch for some languages. Coverage keeps expanding, but for newer languages those extras may not be available and technical text can be uneven.

Google Translate#

For instant translation: a menu through the camera, a spoken conversation, a web page. It is free and covers a very long list of languages. For text you plan to publish, its output usually needs serious editing, especially in long sentences.

Claude and ChatGPT#

For text that will be published. The main advantage is that you can give instructions: audience, tone, words that must stay untranslated, and output format. Claude is strong on long documents and keeping the author's voice; ChatGPT on working with files and images and general flexibility. For a fuller comparison, see ChatGPT vs Claude vs Gemini: which for which job.

Gemini#

If your documents live in Google Drive or you work in Gmail, Gemini is the shorter path. Its translation quality sits alongside the other two assistants; test it on your own text.

Lara Translate and iTranslate#

Lara Translate is the AI translator from the company Translated and lets you choose a translation style, placing it between a dedicated translator and a general assistant. iTranslate is mainly a mobile app: voice, camera and a keyboard for messaging apps, handy when traveling.

Rask AI#

For video creators who want one video in several languages. It transcribes, translates and generates dubbed audio. It is paid, and names and terms should be reviewed before the final export.

A translation prompt for AI assistants#

The gap between an ordinary and a good translation from an assistant is often the prompt. This pattern works for most texts:

Translate the text below from English into Spanish.
Audience: online store owners, non-technical.
Tone: polite and simple, not bureaucratic.
Do not translate these terms: WooCommerce, API, Checkout.
Do not drop or summarize any sentence. If anything is ambiguous, list it at the end.
Text:
[text]

For technical text, a fuller method with a glossary and review step is in technical translation with AI, without the "translated" feel.

How to choose#

1. Define the text type: personal understanding, public content, an official document, or video.
2. Check the volume: a few sentences a day works with free tools; hundreds of pages or automatic site translation needs an API. To get started, read your first AI API call with PHP.
3. Think about format: if you have Word files or slides with tables, a translator that preserves layout saves a lot of time.
4. Take privacy seriously: don't paste contracts or customer data into the free tier of any service. See what never to give an AI.
5. Run a real test: translate one hard paragraph of your own text in two or three tools and read the results side by side.

Common mistakes#

• Trusting without review: any tool can get a number, a negation or a proper name wrong. Have someone who knows both languages read anything you publish.
• Pasting very long text at once: assistants sometimes condense parts of a long text. Send it in sections and say explicitly that nothing should be dropped.
• Ignoring spelling conventions: in Arabic, check hamza forms and ة/ه; in other non-Latin scripts, check script-specific spacing and punctuation.
• Literal idioms: proverbs and colloquial phrases need localizing, not word-for-word translation.
• Forgetting text direction: when Arabic or Hebrew text goes into an English layout, check right-to-left alignment and punctuation in the final output.

Some services restrict access by country, and this can change.

Summary#

• Dedicated translators are fast and consistent; general assistants understand context and tone better.
• Google Translate for everyday use, DeepL for documents and European languages.
• For publishable text, especially in Arabic and other non-Latin languages, Claude or ChatGPT with a precise prompt usually wins.
• For video, a dedicated tool like Rask AI saves a lot of time.
• Never publish any output without human review.